Vertical farming finds success abroad; is the US Next? - Coldwater Daily Reporter

In the future, the farm may come to the city.

“Vertical farming” is the umbrella term describing indoor growing methods like hydroponics, aquaponics, aeroponics and other systems.

Indoor farming isn’t new, of course. Greenhouse production of flowers and vegetables is already a billion-dollar business in Canada, a country that lacks a long growing season.

But vertical farming isn’t just a way to grow crops in an inhospitable environment. It’s viewed as a way for urban agriculture to take root — not in a back lot or basement, but in a skyscraper where 30 floors might be dedicated to the raising of fruits and vegetables.

Promoting the idea

The idea for a high-rise harvest has been actively promoted by Dickson Despommier, a Columbia University professor who challenges his students to find ways to feed a growing population on a planet already facing increasing pressures from global warming. Despommier envisions high-tech lighting, monitoring systems, sensors and other devices to facilitate as many as 100 kinds of fruits and vegetables.

In an interview with Miller-McCune magazine in 2009, Despommier said the concept of a skyscraper farm isn’t as radical as it sounds — not with 9 billion people on the planet by 2050. It’s not going to be possible to devote enough land to feed a population that large, he said. While the organic farm movement is positive, there’s not enough grown to take care of demand, said Despommier.

“There just isn’t enough good soil out there,” he said in the interview.

Vertical farms provide a way to control the growing process unavailable to farmers who are at the mercy of Mother Nature.

Seeing the future

Vertical farming isn’t some futuristic concept. Paignton Zoo in England has been raising herbs and lettuce, among other crops, to feed the zoo’s animals since 2009, thanks to El Paso, Texas-based Valcent Products, using the company’s patented VertiCrop hydroponics system.

Valcent’s Chris Bradford said there were a number of reasons for the zoo to provide the first vertical farm program in Europe.

“There’s a cost-saving element. The zoo spends over $200,000 a year on food for the animals. By using computerized irrigation systems within the building that houses the vertical farm, less water is required to raise crops than if they were grown in a field,” said Bradford.

“That’s one of the reasons we’ve seen interest in vertical farming systems in the Middle East, where water is scarce.

“The system also appeals to people with environmental concerns. The beauty of this (vertical) system is that you don’t need green field sites or chemicals to raise crops.”

Plants that can be raised indoors successfully include carrots, tomatoes, turnips, spinach, lettuce and herbs, Bradford said.

Moffat CAN launches its Scotland-first aquaponics system - Dumfries and Galloway Standard

Apr 27 2011 Dumfries Standard Wednesday

Moffat CAN launches its Scotland-first aquaponics system

ENVIRONMENTAL charity Moffat CAN launched Scotland’s first aquaponics food growing system.

And 500 people flooded to the Old Church Depot at Annanside on Saturday to celebrate the environmental project’s opening and see how it works.

Moffat CAN have transformed the depot from a derelict building into an exciting community project which has created 16 jobs and is training local unemployed people.

The project includes the creation of a community market garden and allotment spaces for 25 families; operating a doorstep recycling service covering Upper Annandale; and installing a mix of small scale renewables to ensure the building produces its own power. The group’s vans which collect recyclable materials even runs on used chip fat.

Visitors were given the chance to feed the fish and see how the system works.

The aquaponics system combines growing fish and plants in such a way that the waste material from the fish becomes the nutrient source for the vegetation.

The plants then use the nutrients, cleaning the water before it is returned clean to the fish.

The fish can be fed with worms and greens from a compost heap, leading to a low input food system.

There was also an Easter egg hunt and a children’s competition, and a tree planting.

Chris Ballance of CAN said: “This is using modern technology to recreate a food system first used by the Aztecs.

“It minimises the amount of energy used in food production and has potential to be used in both small-scale and large-scale applications. It’s exciting to have been able to create the first such system in Scotland.”

The aquaponics greenhouse is being funded by LEADER and the Scottish Government’s Climate Challenge Fund.

Chairman of Moffat CAN, Alis Ballance, said: “It was a fantastic day and we were pleased to see so many people visit. It is a project for the community. It has been a vision for a number of years and at the open day we want to show what is being achieved. It has been a real team effort to bring it all together.”

Sweet Water on course for $250000 in city support - Bay View Compass

If its proponents deliver on their promise, Milwaukee will become a world leader in the emerging 21st-century industry of urban agriculture—and leading the way are “green” entrepreneurs who two years ago repurposed an old Bay View crane factory into an aquaponic fish and vegetable farm.

Local politicians gave that promise a healthy vote of confidence April 26 when the city’s Community & Economic Development Committee voted 5-0 to provide a $250,000 forgivable loan to Sweet Water Organics, 2151 S. Robinson Ave.

Fourteenth District Alderman Tony Zielinski initially sponsored the resolution that taps the city’s Development Fund, which is funded by the property tax, to support Sweet Water at what the nascent business argues is a critical time.

Sweet Water says it needs public investment now to increase its capacity to meet local and regional demand for its fish and produce, and to develop the infrastructure to demonstrate the sustainability of its emerging urban agriculture model—based on aquaponic aquaculture where water and nutrients circulate through a system that benefits both fish and plants.

Its president and cofounder, Josh Fraundorf, said Sweet Water currently employs four people. The terms of the loan mandate that Sweet Water employ 10 people by 2012, 21 by 2013, 35 by 2014, and 45 by 2015. If it meets these job creation targets, the loan will be forgiven. Otherwise, it must be repaid with 5-percent interest.

The committee also amended the proposal to require that Sweet Water come up with a 50-percent match from private-sector investment. Fraundorf said they “absolutely” could achieve this match. He said he and Sweet Water vice president James Godsil had already invested almost $200,000 of their own capital in the business and raised another $800,000 from local investors. He did not specify which investors would provide the $125,000 match.

Funding an Expansion

If approved by the full Common Council May 3, the Development Fund loan comes just a month before IBM consultants are set to descend on Sweet Water June 6 to provide “data-driven systems analysis” to optimize its operations. IBM selected the city of Milwaukee and Sweet Water for one of its 24 global Smarter Cities Challenge Grants, which will provide $400,000 worth of services to “promote sustainable systems innovation.”

Fraundorf said the city’s support will enable Sweet Water to put its best foot forward for the IBMers.

The $250,000 breaks down as follows, according to Sweet Water’s most recent proposal: $40,600 for water filtration and clarification costs, $45,000 for one outdoor triple fish tank, $18,900 to acquire 50,000 new fish seedlings, $37,500 to complete seven outdoor greenhouses, $38,500 to construct a 1,200-square-foot climate-controlled vegetable sprout production room, $28,600 to construct an underground concrete slab for compost production, and $40,900 for compost tractors and a truck and trailer to transport local vegetable waste for composting.

Sweet Water says its expansion would quadruple its organic vegetable production, allow for another 12,000 fish, and enable production of eight tons of compost per month. The compost would be sold to retailers.

Sweet Water can currently produce 4,000 plants and 80,000 perch per year. Expansion would enable not only production of lettuce, sprouts, wheatgrass, and watercress grown inside, but also tomatoes, green peppers, and cucumbers grown outside in greenhouses.

Sweet Water estimates its current demand is 100,000 fish and 50,000 pounds of vegetables per year.

“Our goal is to continue to expand because we can’t produce enough,” Fraundorf said. “We get a premium for our produce. Our demand is such we need to expand our capacity.”

Development Fund Concern

An earlier version of the proposal, submitted to the committee April 4, directed $49,000 to infrastructure costs and $201,000 for operating costs like employee salaries and wages.

Fraundorf then told the committee that Sweet Water was “really close to in the black” but was currently operating with what he called a skeleton crew. He said he needed more people and that expansion would mean new jobs.

Use of the Development Fund directly for salaries would have been incompatible with precedent.

According to Department of City Development spokesperson Jeff Fleming, five activities qualify for Development Fund investment: grants or loans to redevelop taxable property; infrastructure work to facilitate private investment (for example, the Riverwalk or streetscaping); environmental testing and brownfield remediation to facilitate private investment; land acquisition, demolition, or landscaping to improve the local business environment; or “grants or loans to offset employee training costs for projects involving capital investment that result in retention or expansion of permanent private employment.”

The committee April 4 postponed a decision on the request until April 26, awaiting further analysis by DCD, which had only been informed of the proposal the previous Friday, March 29.

Sweet Water and DCD met in the interval. “We were told essentially [the loan] has to be just for capital investment,” said Fraundorf, who said Alderman Zielinski initially made him aware of the Development Fund. An amended proposal was attached to the committee file April 21.

Even the revised proposal made DCD Deputy Commissioner Martha Brown uncomfortable about what precedent was being set. She stressed that DCD has supported Sweet Water, including its IBM Smarter Cities grant, but said she was “troubled” by this loan request.

Brown told the committee that Sweet Water’s itemized expenditures were “kind of a moving target” and felt some would not qualify. But mainly, she was concerned that 100-percent of the investment risk would be the taxpayer’s. She asked where the private investment was.

Brown also cited a recent $195,000 forgivable Development Fund loan provided to Bentley World Packaging for physical improvements at 5211 S. Third St. that met DCD’s first criterion, but which she said also leveraged $1.7 million in private investment. That Development Fund investment is intended to create 126 jobs—or about $1,550 in city funds per job created. Sweet Water’s proposal would conservatively create 41 jobs—at close to $7,000 in city funds per job.

Creating an Industry

Michael Mervis, vice president and assistant to the chairman at Zilber Ltd. and Towne Realty spokesperson, testified in support of Sweet Water. Mervis said he was a volunteer helping Sweet Water to take control of its real estate. Sweet Water is currently a tenant of a property that is behind in its taxes.

Mervis said Brown’s concern about private investment was a fair question, but he appealed to the bigger picture. He said this loan was a critical opportunity to advance Sweet Water from the incubator stage onto the road of rapid expansion. “This is a classic example where the city of Milwaukee is in a position to create jobs in a local industry,” he said.

Dean Amhaus, executive director of Milwaukee’s Water Council, also testified in support.

“Aquaponics is going to happen. It is going to happen somewhere in the world because it is catching on,” Amhaus said, adding that students at MIT were now working on a similar system. Chicagoans have also expressed interest in adopting Sweet Water’s model. “[With Sweet Water] We no longer want to be—we are a world water hub,” Amhaus said.

Fraundorf said Milwaukee was on the verge of creating something that does not exist anywhere else in the world, and Sweet Water’s final proposal anticipates “substantial” private investment within a year of expansion.

Zielinski called supporting the public loan a “slam dunk” case. “These people are visionaries. They’re coming to the city for help. I think we should help them.”

When asked by the Compass if Sweet Water would shut down if it does not receive the Development Fund loan, Fraundorf said no. “If we wanted to be profitable on a small scale, we could already be profitable, but we want to create an industry.”

The Milwaukee Grow Zone?

The April 4 version of Sweet Water’s proposed “Milwaukee Grow Zone” expansion referenced a second phase creating a “green industry park” in Bay View, possibly on the vacant six-acre former Army Reserve base site at Lincoln Avenue and Bay Street.

This “Sweet Water Village” concept, which would attract and develop green business partnerships, was removed from the revised request for the Development Fund loan.

But Sweet Water has been attracting interest from area businesses and organizations.

Among the potential educational partners are MATC, MSOE, and the Milwaukee Teacher Education Center (MTEC).

One interested business is Waukesha-based Front Porch Pets. David Baldus, its founder and president, testified before the committee April 4 that he hopes to move his business to Bay View and work in concert with Sweet Water.

Front Porch Pets, which produces vegetable-based dog treats, would set up operations adjacent to Sweet Water to the south. Baldus envisioned waste heat from his dehydrating process being used to warm Sweet Water’s fish tanks, cutting down on their heating bill. Baldus said his distribution network could benefit Sweet Water and he hopes to incorporate their greens into his product lines.

Copyright 2011 by Bay View Compass. All rights reserved.
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Tilapia in Aquaponics

By TCLynx, on December 16th, 2010Tilapia Dec 29 2008 Tilapia Dec 29 2008
I only really recommend tilapia in Aquaponics situations where heating and climate control are a given, like indoors or a heated greenhouse or tropical climate. For tilapia to grow well, the water needs to stay above 70 F. Just to keep them alive, one needs to plan on keeping the water above 55 F.
New Babies New Babies
In Central Florida one might think that keeping the Aquaponics water warm would be pretty easy since water is a great heat sink and all. However, flood and drain gravel beds make really effective heat exchangers and tend to bring the water closer to the air temperature faster than a tank just sitting here. Even in a greenhouse, my flood and drain Aquaponics systems required supplemental heat to keep tilapia alive over winter.
Larger babies Larger babies
Aside from the temperature issues for Tilapia, there are some other things about tilapia which should be well understood before choosing them for Aquaponics. They have the benefit of being easy to breed and they have the drawback of needing to control their breeding.
Babies May 30 2009 Babies May 30 2009
Tilapia are mount brooders, that is the female will lay eggs, the male will fertilize them and then the female pics them up in her mouth to brood them. While the female is holding eggs and fry in her mouth, she isn’t eating or growing and the more time and energy the males spend on breeding, the less energy is going into growing. If you have mixed gender tilapia in a tank and they have access to the bottom or any horizontal surface, they will be trying to breed. Being able to breed one’s own stock is an attractive side of tilapia but uncontrolled breeding in the tank will leave one with lots of small fish and few worth eating.
2 lb tilapia 2 lb tilapia
To control breeding, some people will get all male fish but this is usually done with hormone laced feed for the fry or special hybrid crosses that produce all male offspring. This is rarely available to a small scale home Aquaponics producer. The easiest way to control tilapia breeding on a small home scale is with cage culture. I suspend a cage in the tank so that the fish don’t have access to the bottom of the tank.
Tilapia for dinner after over a year Tilapia for dinner after over a year
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